I don't know who did it but the word next to Nurnberg is Wehrgang. It refers to the defensive corridors at the top of the perimeter walls of a Castle, monastery or fort, which is what your print depicts.
DCMatt would be a good one to ask about this. Agreed on the "Nuremburg - Wehrgang" but can't decipher the signature. Could be an L or H, I think the second letter is a ü.
I have no knowledge of the artist, but if you want to know the name of the tower in the pic, you can contact the Administration Office of the Imperial Castle of Nuremberg--here: Burgverwaltung Nürnberg Auf der Burg 13 90403 Nürnberg